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Kordu Tools

Gaming

Hardware testing, settings optimisation, and gaming utilities

Reaction Time Test

Test your reaction time with a visual stimulus and track your speed across multiple attempts. See how you rank against human averages.

CPS Test

Measure your clicks per second with a precision click speed test. Choose from 1s to 60s modes and track your best scores.

Keyboard Tester

Test every key on your keyboard with a visual layout. Detect ghosting, check N-key rollover, and verify all keys register correctly.

Mouse Sensitivity Converter

Convert mouse sensitivity between games instantly. Supports CS2, Valorant, Overwatch 2, Apex Legends, and 20+ titles with accurate cm/360 and eDPI calculations.

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Crosshair Generator

Design, preview, and export custom crosshairs for CS2, Valorant, and other FPS games. Choose from presets or fine-tune every parameter, then download a transparent PNG or copy console commands.

Gaming Name Generator

Generate unique gamertags, usernames, and gaming names instantly. Choose competitive, funny, fantasy, or clean styles with platform-aware length limits for Xbox, PSN, Steam, and Discord.

Team Randomizer

Randomly split a list of players into balanced teams. Paste names, pick a team count, and get fair groups in one click — no sign-up required.

Mouse Polling Rate Test

Test your mouse polling rate in Hz by moving your mouse across a tracking area. Instantly see your current, average, min, and max Hz with a live interval chart.

Monitor Refresh Rate Test

Detect your monitor's refresh rate by counting real frames rendered in the browser. See your Hz, frame times, and a live motion smoothness test.

Dead Pixel Test

Test your monitor for dead or stuck pixels with fullscreen solid colours. Includes a stuck pixel fixer that rapidly cycles colours to revive unresponsive pixels.

Typing Speed Test

Measure your typing speed in words per minute with timed tests across multiple text modes. Track accuracy, WPM, and personal bests over time.

FOV Calculator

Calculate and convert field of view between horizontal, vertical, and diagonal FOV for any aspect ratio. Includes game presets for CS2, Valorant, Apex, and more.

Tournament Bracket Generator

Create single-elimination tournament brackets instantly. Enter participant names, choose seeding, and generate interactive brackets with click-to-advance winners — no sign-up required.

Aim Trainer

Train your mouse accuracy with flick, precision, and speed modes. Track hits, misses, accuracy percentage, and average reaction time across timed sessions.

Stretched Resolution Calculator

Calculate stretched resolution dimensions for any monitor. Find the perfect 4:3 or 5:4 stretched res for CS2, Valorant, and other competitive FPS games with a live visual comparison.

DPS Calculator

Calculate base, effective, burst, and sustained DPS for any weapon. Factor in attack speed, critical hit chance, magazine size, and reload time. Compare two weapons side by side.

Drop Rate Calculator

Calculate loot drop probabilities, expected farming runs, and dry streak odds. Enter any drop rate and see exactly how many attempts you need for 50%, 90%, or 99% confidence.

D&D Stat Roller

Roll ability scores for D&D 5e characters using 4d6 drop lowest, 3d6 straight, standard array, or point buy. See individual dice, assign scores to abilities, and copy your stats.

Initiative Tracker

Track D&D initiative order, manage HP, apply conditions, and control combat turns. Sort combatants automatically, track rounds, and save encounters to resume later.

Encounter Calculator

Build and balance D&D 5e encounters instantly. Set your party size and level, add monsters by CR, and see real-time difficulty ratings with adjusted XP using official DMG encounter multipliers.

Free online tools built for PC gamers. Test your reaction time, measure clicks per second, check keyboard rollover, convert mouse sensitivity between games, generate custom crosshairs, calculate FOV, create tournament brackets, and more. All tools run in your browser — fast, free, and private.